Home / 78,503.21-108,333.40-42,692.46

Finding the Fourth Proportional to 78,503.21, 108,333.40 and 42,692.46

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Solution

The fourth proportional to 78,503.21, 108,333.40 and 42,692.46 is: 58,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,503.21 : 108,333.40 = 42,692.46 : x
  2. Step 2: Convert to fraction form
    78,503.21/108,333.40 = 42,692.46/x
  3. Step 3: Cross multiply
    78,503.21x = 108,333.40 × 42,692.46
  4. Step 4: Simplify right side
    78,503.21x = 4,625,018,591.03
  5. Step 5: Solve for x
    x = 4,625,018,591.03/78,503.21
  6. Step 6: Final answer
    x = 58,915.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.